<template>
    <!-- inline:代表行内表单，代表一行可以放置多个表单元素 -->
    <el-form :inline="true" class="demo-form-inline" :model="cForm">
        <el-form-item label="一级分类">
            <el-select  placeholder="请选择" v-model="cForm.category1Id" @change="handler1" :disabled="show">
                <el-option :label="c1.name " :value="c1.id" v-for="(c1,index) in list1" :key="c1.id" ></el-option>
            </el-select>
        </el-form-item>
        <el-form-item label="二级分类">
            <el-select  placeholder="请选择" v-model="cForm.category2Id" @change="handler2" :disabled="show">
                <el-option :label="c2.name" :value="c2.id" v-for="(c2,index) in list2" :key="c2.id" ></el-option>
            </el-select>
        </el-form-item>
        <el-form-item label="三级分类">
            <el-select  placeholder="请选择" v-model="cForm.category3Id" @change="handler3" :disabled="show">
                <el-option :label="c3.name" :value="c3.id" v-for="(c3,index) in list3" :key="c3.id" ></el-option>
            </el-select>
        </el-form-item>


    </el-form>
</template>

<script>
export default {
    name: 'CategorySelect',
  props:['show'],
    data() {
        return {
            //一级菜单存储的数据
            list1:[],
            //二级菜单存储的数据
            list2:[],
            //三级菜单存储的数据
            list3:[],
            //收集相应的一级二级三级分类的id
            cForm:{
                category1Id:'',
                category2Id:'',
                category3Id:'',
            }
        }
    },
    mounted(){
        this.getCategory1List();
    },
    methods: {
        //获取一级分类数据的方法
        async getCategory1List(){
            //获取一级分类的请求
           let result =await this.$API.attr.reqCategory1List();
           if(result.code === 200){
            this.list1 = result.data

           }else{
                console.log('出错了');
           }
        },
        //一级分类的select事件回调
        async handler1(){
            //解构出一级分类的id
            const {category1Id} = this.cForm;
            this.$emit('getCategoryId',{categoryId:category1Id,level:1})
            //清除数据
            this.list2 = [];
            this.list3 = [];
            this.cForm.category2Id='';
            this.cForm.category3Id='';
            //通过一级分类的id，获取二级分类的数据
            let result = await this.$API.attr.reqCategory2List(category1Id)
            if(result.code == 200){
                this.list2 = result.data
            }else{
                console.log('出错了');
            }
        },
        //二级分类的select事件回调
        async handler2(){
            //解构出二级分类的id
            const {category2Id} = this.cForm;
            this.$emit('getCategoryId',{categoryId:category2Id,level:2})
            //清空数据
            this.list3 = [];
            this.cForm.category3Id = '';
            //通过二级分类的id，获取三级分类的数据
            let result = await this.$API.attr.reqCategory3List(category2Id)
            if(result.code == 200){
                this.list3 = result.data
            }else{
                console.log('出错了');
            }
        },
        //三级分类的回调
        handler3(){
            //解构id
            const {category3Id} = this.cForm;
            this.$emit('getCategoryId',{categoryId:category3Id,level:3})
        }

    },
}
</script>

<style>

</style>
